1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Read CopyrightID inside OTSCanonicalRecord → must equal the CopyrightID above 5. GET OTSVerificationAPI → pre-computed 6-check result from server 6. If all match: this entity was registered on CopyrightChains at OTSTimestamp, independently verifiable on Bitcoin
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x707ff5c0f0c5c8d000a2bc2b82e7cda1334b98f8058e3754f027d5ea2f47d75f. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/36b31e86-d0b1-4129-b042-31bf9ab22c39.json and https://artists.proofprofile.net/proofs/artist/36b31e86-d0b1-4129-b042-31bf9ab22c39.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe79e2a59ebe5125d5e021040477f5bb4206c794ceb2560eac75416e7d8526000. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FRX452083827.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ccc72458aceec99d58f1d4b9943e18976d920bf4280f741af979dd5136fc81a. Chain 2 (Bitcoin): anchored in block 958142 (2026-07-15T12:57:52Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FRX452083828.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7433527a1620ffef307117ba0d8ada592143010ec6359715838586f382fafd5. Chain 2 (Bitcoin): anchored in block 958552 (2026-07-18T13:15:29Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FRX452083830.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4e7b043af9d2fc0edd0288b07aa5103da9a2e5d1bee692e69b4874215a874af. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FRX452083838.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x655e2c3a8f9adae5be44f4a9ba490df4fb6bc9a69fbe5818dc26d73ff2c5791b. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FRX452083841.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x704ca8f42c7744659da86d21104ab7950b448a35659022997567ccca2edac922. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FRX452083848.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac27ffd3fce70973159f75188b03e55e963814695c9ce681a224ba5673243f03. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FRX452010300.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6040a24900b74b78ad39bbc5528f81a6f3b87aa2d0395a7752f37edb4fe54142. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FR10S2093362.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa9a907952565facb4b8a189baafdbc4a8b29b3dff6326cf906b90687d2f9130. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FRX202056504.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7160c23ce523c23bb63aab3558c211f23ae1bff9a1226054f5a52164d08ad142. Chain 2 (Bitcoin): anchored in block 957919 (2026-07-13T23:58:45Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FRX202056506.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5cd4d5780ba1ee89054dc1778b370ea40693cf97c19a37842706f4e2fe4741ed. Chain 2 (Bitcoin): anchored in block 958579 (2026-07-18T16:26:17Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FRX202056509.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f90842dceab27534a11c528be263c743aff0ed8f8c4b1f946f9003b6eafcedb. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FRX202056515.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x854e683b891a95a2425959e2573dc35f5951de68c9583ad4bee468a185ef72a6. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FRX202056517.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60f26b8077060c5d39053543b048f5b0dae76ac6d2c02244566b8bb30588f170. Chain 2 (Bitcoin): anchored in block 958153 (2026-07-15T12:03:04Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FRX202056520.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f718cd9e2eaa25bedb07a675e3b22a391f6922d9d3ebabbc34333c0e22b2a46. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FRX202056522.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc32305583ac9a68ecde4d0a810b12d8fb4ca115d0dcc0383f8bcb9db49b1c67. Chain 2 (Bitcoin): anchored in block 958203 (2026-07-16T00:07:30Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FR2X42146721.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9bda617f6ea4f245d2adf31cee413f09d9835e77b3b71bdbd3fe772d2b7cc420. Chain 2 (Bitcoin): anchored in block 957919 (2026-07-13T23:58:45Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FR10S2248449.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39a1d50878099b5a24b70d48714d6fa9c932a8bf85cda2f79aaa2903515d6f37. Chain 2 (Bitcoin): anchored in block 958371 (2026-07-17T05:45:43Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FRX762200685.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4dbdf7f1c83d84f82bf397850a85bdda7407eba8aff5770b16576f1f6943ea05. Chain 2 (Bitcoin): anchored in block 958196 (2026-07-15T21:40:57Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FRX762200686.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18f5b1197c71c4f4ce94dfb3f36fe362bbb7af5cc9411f02bed58c010ccb82ea. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FR59R2425823.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x018fd9582e429695825c1ea3b31033fe26220be3dfe3122a3713c1338b3b281e. Chain 2 (Bitcoin): anchored in block 958776 (2026-07-19T20:11:59Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DGA0Q2485742.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4eff10accaf461e85ef1bb0f579aba847eec0aca62eec81bafb3772977b35cc. Chain 2 (Bitcoin): anchored in block 957546 (2026-07-11T09:35:53Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DGA0R2493089.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7abb4d3c2f8c6d2de3744b04bb37f6ca1ddc1d246513972bee85e8bb001f7adf. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FRX452563661.